SPONSORED LINKS

Compression lost

Tiny
TIRAS
  • MEMBER
  • 1997 MAZDA 626
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 85 MILES
I had replace head gasket at 1997 Mazda 626 LX 2.0 L. And lost comression for all four cylinders. Timing belt instaled correct. Cylinder head was check for leak and surfased. Coolant pressure test do not show any leak therefore looks lake head gasket seat right. Had good comression before this job. What problem can be?
SPONSORED LINKS
Friday, March 25th, 2011 AT 7:03 AM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Other than timing, it is gasket installation.
Was this
answer
helpful?
Yes
No
Friday, March 25th, 2011 AT 11:20 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
I would question just how hot the engine got from the initial failure. It is possible to have cylinder/piston damage from the heat if it was that extreme. Someone could have installed the head incorrectly and caused valve damage in the process too. I would do a leakdown test to help isolate where that compression is leaking to.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, March 25th, 2011 AT 1:33 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Pump some oil into the cylinders to wet the pitons and retry. Overheating cand dry out the rings and the job took some time so the rings could be dry resulting in compression losses.
Was this
answer
helpful?
Yes
No
Friday, March 25th, 2011 AT 3:07 PM

Please login or register to post a reply.

Related Engine Compression Content

Engine Compression Test
VIDEO
Engine Compression Test
Instructional repair video
Compression Test
GUIDE
Compression Test
A compression test is a valuable diagnostic procedure that helps determine the health of an engine by measuring the pressure generated in each cylinder. The following is a...
VIEW MORE

Sponsored links